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DISH SETUP: Single sat, Multi-Sat & Motorised
Motor for dish made of wiper motor
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<blockquote data-quote="Topper" data-source="post: 121953" data-attributes="member: 186250"><p>Ah no I remember they were just some crappy phone pics which I will have to show again until I have a good digi camera. but here is the method</p><p>Take a standard wiper motor which has a nylon worm wheel. Disassemble to get at the worm wheel. You will have an embedded (in the nylon) output shaft which you will have to remove by pressing or hammering out. You will be left with a hole in the nylon wheel. I then took a piece of half inch threaded steel bar with a number of threaded nuts to suit. It would be better to use stainless steel if you can afford it to eliminate rusting. Take one of the nuts and heat up to red hot, then using tongs quickly place over hole left by removal of shaft and using lump hammer press home until nut is embedded. As soon as it is embedded douse with water to cool and ensure it is a tight fit. Any slackness can be taken up using Araldite. You may need a couple of heating attempts to get if fully located. I think but cannot remember fully I repeated this from the 2nd side thus having two embedded nuts. You then have a <strong>shaft mounted worm wheel. </strong>Then re-assemble the motor housings. In my case where the output shaft went through the casing it actually ran in the casing bearing thus I had no bearing on that side so I used the shells of a larger motor with locating rods and created a new bearing shell which fitted over the old casing but used a flat pan ball bearing. It is sufficient to hold it all together but as it moves quite slowly there is no detriment and the alignment is also out a bit but again not a problem. Mine has been in operation for 15 years and is still going strong. I just grease it and the shaft ocassionally. Of course being DC you can speed it up and down if you increase/decrease the voltage but I just use a smoothed DC output 15 Volt transformer to drive it. Heath Robinson for sure but it works.</p></blockquote><p></p>
[QUOTE="Topper, post: 121953, member: 186250"] Ah no I remember they were just some crappy phone pics which I will have to show again until I have a good digi camera. but here is the method Take a standard wiper motor which has a nylon worm wheel. Disassemble to get at the worm wheel. You will have an embedded (in the nylon) output shaft which you will have to remove by pressing or hammering out. You will be left with a hole in the nylon wheel. I then took a piece of half inch threaded steel bar with a number of threaded nuts to suit. It would be better to use stainless steel if you can afford it to eliminate rusting. Take one of the nuts and heat up to red hot, then using tongs quickly place over hole left by removal of shaft and using lump hammer press home until nut is embedded. As soon as it is embedded douse with water to cool and ensure it is a tight fit. Any slackness can be taken up using Araldite. You may need a couple of heating attempts to get if fully located. I think but cannot remember fully I repeated this from the 2nd side thus having two embedded nuts. You then have a [b]shaft mounted worm wheel. [/b]Then re-assemble the motor housings. In my case where the output shaft went through the casing it actually ran in the casing bearing thus I had no bearing on that side so I used the shells of a larger motor with locating rods and created a new bearing shell which fitted over the old casing but used a flat pan ball bearing. It is sufficient to hold it all together but as it moves quite slowly there is no detriment and the alignment is also out a bit but again not a problem. Mine has been in operation for 15 years and is still going strong. I just grease it and the shaft ocassionally. Of course being DC you can speed it up and down if you increase/decrease the voltage but I just use a smoothed DC output 15 Volt transformer to drive it. Heath Robinson for sure but it works. [/QUOTE]
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DISH SETUP: Single sat, Multi-Sat & Motorised
Motor for dish made of wiper motor
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